CVE-2021-32030ASUS Routers Improper Authentication Vulnerability

Descripción

The administrator application on ASUS GT-AC2900 devices before 3.0.0.4.386.42643 and Lyra Mini before 3.0.0.4_384_46630 allows authentication bypass when processing remote input from an unauthenticated user, leading to unauthorized access to the administrator interface. This relates to handle_request in router/httpd/httpd.c and auth_check in web_hook.o. An attacker-supplied value of '\0' matches the device's default value of '\0' in some situations. Note: All versions of Lyra Mini and earlier which are unsupported (End-of-Life, EOL) are also affected by this vulnerability, Consumers can mitigate this vulnerability by disabling the remote access features from WAN.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-Gaming-Routers/RT-AC2900/HelpDesk_BIOS/ Product
• https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0010.md Broken LinkExploitThird Party Advisory
• https://www.atredis.com/blog/2021/4/30/asus-authentication-bypass Exploit
• https://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/ Product
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-32030 US Government Resource